Commit | Line | Data |
---|---|---|
1e6dd65e MCC |
1 | /* |
2 | * Virtual Video driver - This code emulates a real video device with v4l2 api | |
3 | * | |
4 | * Copyright (c) 2006 by: | |
5 | * Mauro Carvalho Chehab <mchehab--a.t--infradead.org> | |
6 | * Ted Walther <ted--a.t--enumera.com> | |
7 | * John Sokol <sokol--a.t--videotechnology.com> | |
8 | * http://v4l.videotechnology.com/ | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the BSD Licence, GNU General Public License | |
12 | * as published by the Free Software Foundation; either version 2 of the | |
13 | * License, or (at your option) any later version | |
14 | */ | |
15 | #include <linux/module.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/errno.h> | |
18 | #include <linux/fs.h> | |
19 | #include <linux/kernel.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/mm.h> | |
22 | #include <linux/ioport.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/sched.h> | |
25 | #include <linux/pci.h> | |
26 | #include <linux/random.h> | |
27 | #include <linux/version.h> | |
51b54029 | 28 | #include <linux/mutex.h> |
1e6dd65e | 29 | #include <linux/videodev2.h> |
1095136d | 30 | #include <linux/dma-mapping.h> |
cd41e28e MCC |
31 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
32 | /* Include V4L1 specific functions. Should be removed soon */ | |
33 | #include <linux/videodev.h> | |
34 | #endif | |
f13df919 | 35 | #include <linux/interrupt.h> |
5a037706 | 36 | #include <media/videobuf-vmalloc.h> |
1e6dd65e | 37 | #include <media/v4l2-common.h> |
35ea11ff | 38 | #include <media/v4l2-ioctl.h> |
1e6dd65e MCC |
39 | #include <linux/kthread.h> |
40 | #include <linux/highmem.h> | |
7dfb7103 | 41 | #include <linux/freezer.h> |
1e6dd65e | 42 | |
584ce48d | 43 | #define VIVI_MODULE_NAME "vivi" |
745271ae | 44 | |
1e6dd65e MCC |
45 | /* Wake up at about 30 fps */ |
46 | #define WAKE_NUMERATOR 30 | |
47 | #define WAKE_DENOMINATOR 1001 | |
48 | #define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */ | |
49 | ||
1e6dd65e MCC |
50 | #include "font.h" |
51 | ||
1e6dd65e | 52 | #define VIVI_MAJOR_VERSION 0 |
745271ae | 53 | #define VIVI_MINOR_VERSION 5 |
1e6dd65e | 54 | #define VIVI_RELEASE 0 |
543323bc MCC |
55 | #define VIVI_VERSION \ |
56 | KERNEL_VERSION(VIVI_MAJOR_VERSION, VIVI_MINOR_VERSION, VIVI_RELEASE) | |
1e6dd65e | 57 | |
c820cc45 MCC |
58 | /* Declare static vars that will be used as parameters */ |
59 | static unsigned int vid_limit = 16; /* Video memory limit, in Mb */ | |
c820cc45 | 60 | static int video_nr = -1; /* /dev/videoN, -1 for autodetect */ |
55712ff7 | 61 | static int n_devs = 1; /* Number of virtual devices */ |
1e6dd65e MCC |
62 | |
63 | /* supported controls */ | |
64 | static struct v4l2_queryctrl vivi_qctrl[] = { | |
65 | { | |
66 | .id = V4L2_CID_AUDIO_VOLUME, | |
67 | .name = "Volume", | |
68 | .minimum = 0, | |
69 | .maximum = 65535, | |
70 | .step = 65535/100, | |
71 | .default_value = 65535, | |
72 | .flags = 0, | |
73 | .type = V4L2_CTRL_TYPE_INTEGER, | |
543323bc | 74 | }, { |
1e6dd65e MCC |
75 | .id = V4L2_CID_BRIGHTNESS, |
76 | .type = V4L2_CTRL_TYPE_INTEGER, | |
77 | .name = "Brightness", | |
78 | .minimum = 0, | |
79 | .maximum = 255, | |
80 | .step = 1, | |
81 | .default_value = 127, | |
82 | .flags = 0, | |
83 | }, { | |
84 | .id = V4L2_CID_CONTRAST, | |
85 | .type = V4L2_CTRL_TYPE_INTEGER, | |
86 | .name = "Contrast", | |
87 | .minimum = 0, | |
88 | .maximum = 255, | |
89 | .step = 0x1, | |
90 | .default_value = 0x10, | |
91 | .flags = 0, | |
92 | }, { | |
93 | .id = V4L2_CID_SATURATION, | |
94 | .type = V4L2_CTRL_TYPE_INTEGER, | |
95 | .name = "Saturation", | |
96 | .minimum = 0, | |
97 | .maximum = 255, | |
98 | .step = 0x1, | |
99 | .default_value = 127, | |
100 | .flags = 0, | |
101 | }, { | |
102 | .id = V4L2_CID_HUE, | |
103 | .type = V4L2_CTRL_TYPE_INTEGER, | |
104 | .name = "Hue", | |
105 | .minimum = -128, | |
106 | .maximum = 127, | |
107 | .step = 0x1, | |
108 | .default_value = 0, | |
109 | .flags = 0, | |
110 | } | |
111 | }; | |
112 | ||
113 | static int qctl_regs[ARRAY_SIZE(vivi_qctrl)]; | |
114 | ||
6c2f9901 | 115 | #define dprintk(dev, level, fmt, arg...) \ |
c820cc45 | 116 | do { \ |
6c2f9901 | 117 | if (dev->vfd->debug >= (level)) \ |
c820cc45 | 118 | printk(KERN_DEBUG "vivi: " fmt , ## arg); \ |
1e6dd65e MCC |
119 | } while (0) |
120 | ||
121 | /* ------------------------------------------------------------------ | |
122 | Basic structures | |
123 | ------------------------------------------------------------------*/ | |
124 | ||
125 | struct vivi_fmt { | |
126 | char *name; | |
127 | u32 fourcc; /* v4l2 format id */ | |
128 | int depth; | |
129 | }; | |
130 | ||
131 | static struct vivi_fmt format = { | |
132 | .name = "4:2:2, packed, YUYV", | |
133 | .fourcc = V4L2_PIX_FMT_YUYV, | |
134 | .depth = 16, | |
135 | }; | |
136 | ||
137 | struct sg_to_addr { | |
138 | int pos; | |
139 | struct scatterlist *sg; | |
140 | }; | |
141 | ||
142 | /* buffer for one video frame */ | |
143 | struct vivi_buffer { | |
144 | /* common v4l buffer stuff -- must be first */ | |
145 | struct videobuf_buffer vb; | |
146 | ||
147 | struct vivi_fmt *fmt; | |
1e6dd65e MCC |
148 | }; |
149 | ||
150 | struct vivi_dmaqueue { | |
151 | struct list_head active; | |
1e6dd65e MCC |
152 | |
153 | /* thread for generating video stream*/ | |
154 | struct task_struct *kthread; | |
155 | wait_queue_head_t wq; | |
156 | /* Counters to control fps rate */ | |
157 | int frame; | |
158 | int ini_jiffies; | |
159 | }; | |
160 | ||
161 | static LIST_HEAD(vivi_devlist); | |
162 | ||
163 | struct vivi_dev { | |
164 | struct list_head vivi_devlist; | |
165 | ||
55862ac9 | 166 | spinlock_t slock; |
aa9dbac4 | 167 | struct mutex mutex; |
1e6dd65e MCC |
168 | |
169 | int users; | |
170 | ||
171 | /* various device info */ | |
f905c442 | 172 | struct video_device *vfd; |
1e6dd65e MCC |
173 | |
174 | struct vivi_dmaqueue vidq; | |
175 | ||
176 | /* Several counters */ | |
dfd8c04e MCC |
177 | int h, m, s, ms; |
178 | unsigned long jiffies; | |
1e6dd65e | 179 | char timestr[13]; |
025341d4 MCC |
180 | |
181 | int mv_count; /* Controls bars movement */ | |
1e6dd65e MCC |
182 | }; |
183 | ||
184 | struct vivi_fh { | |
185 | struct vivi_dev *dev; | |
186 | ||
187 | /* video capture */ | |
188 | struct vivi_fmt *fmt; | |
543323bc | 189 | unsigned int width, height; |
1e6dd65e MCC |
190 | struct videobuf_queue vb_vidq; |
191 | ||
192 | enum v4l2_buf_type type; | |
193 | }; | |
194 | ||
195 | /* ------------------------------------------------------------------ | |
196 | DMA and thread functions | |
197 | ------------------------------------------------------------------*/ | |
198 | ||
199 | /* Bars and Colors should match positions */ | |
200 | ||
201 | enum colors { | |
202 | WHITE, | |
203 | AMBAR, | |
204 | CYAN, | |
205 | GREEN, | |
206 | MAGENTA, | |
207 | RED, | |
543323bc MCC |
208 | BLUE, |
209 | BLACK, | |
1e6dd65e MCC |
210 | }; |
211 | ||
212 | static u8 bars[8][3] = { | |
213 | /* R G B */ | |
543323bc MCC |
214 | {204, 204, 204}, /* white */ |
215 | {208, 208, 0}, /* ambar */ | |
216 | { 0, 206, 206}, /* cyan */ | |
217 | { 0, 239, 0}, /* green */ | |
218 | {239, 0, 239}, /* magenta */ | |
219 | {205, 0, 0}, /* red */ | |
220 | { 0, 0, 255}, /* blue */ | |
221 | { 0, 0, 0}, /* black */ | |
1e6dd65e MCC |
222 | }; |
223 | ||
543323bc MCC |
224 | #define TO_Y(r, g, b) \ |
225 | (((16829 * r + 33039 * g + 6416 * b + 32768) >> 16) + 16) | |
1e6dd65e | 226 | /* RGB to V(Cr) Color transform */ |
543323bc MCC |
227 | #define TO_V(r, g, b) \ |
228 | (((28784 * r - 24103 * g - 4681 * b + 32768) >> 16) + 128) | |
1e6dd65e | 229 | /* RGB to U(Cb) Color transform */ |
543323bc MCC |
230 | #define TO_U(r, g, b) \ |
231 | (((-9714 * r - 19070 * g + 28784 * b + 32768) >> 16) + 128) | |
1e6dd65e MCC |
232 | |
233 | #define TSTAMP_MIN_Y 24 | |
234 | #define TSTAMP_MAX_Y TSTAMP_MIN_Y+15 | |
235 | #define TSTAMP_MIN_X 64 | |
236 | ||
543323bc MCC |
237 | static void gen_line(char *basep, int inipos, int wmax, |
238 | int hmax, int line, int count, char *timestr) | |
1e6dd65e | 239 | { |
543323bc MCC |
240 | int w, i, j, y; |
241 | int pos = inipos; | |
242 | char *p, *s; | |
243 | u8 chr, r, g, b, color; | |
1e6dd65e MCC |
244 | |
245 | /* We will just duplicate the second pixel at the packet */ | |
543323bc | 246 | wmax /= 2; |
1e6dd65e MCC |
247 | |
248 | /* Generate a standard color bar pattern */ | |
543323bc MCC |
249 | for (w = 0; w < wmax; w++) { |
250 | int colorpos = ((w + count) * 8/(wmax + 1)) % 8; | |
251 | r = bars[colorpos][0]; | |
252 | g = bars[colorpos][1]; | |
253 | b = bars[colorpos][2]; | |
1e6dd65e | 254 | |
543323bc MCC |
255 | for (color = 0; color < 4; color++) { |
256 | p = basep + pos; | |
1e6dd65e MCC |
257 | |
258 | switch (color) { | |
543323bc MCC |
259 | case 0: |
260 | case 2: | |
261 | *p = TO_Y(r, g, b); /* Luma */ | |
262 | break; | |
263 | case 1: | |
264 | *p = TO_U(r, g, b); /* Cb */ | |
265 | break; | |
266 | case 3: | |
267 | *p = TO_V(r, g, b); /* Cr */ | |
268 | break; | |
1e6dd65e MCC |
269 | } |
270 | pos++; | |
271 | } | |
272 | } | |
273 | ||
274 | /* Checks if it is possible to show timestamp */ | |
543323bc | 275 | if (TSTAMP_MAX_Y >= hmax) |
1e6dd65e | 276 | goto end; |
543323bc | 277 | if (TSTAMP_MIN_X + strlen(timestr) >= wmax) |
1e6dd65e MCC |
278 | goto end; |
279 | ||
280 | /* Print stream time */ | |
543323bc MCC |
281 | if (line >= TSTAMP_MIN_Y && line <= TSTAMP_MAX_Y) { |
282 | j = TSTAMP_MIN_X; | |
283 | for (s = timestr; *s; s++) { | |
284 | chr = rom8x16_bits[(*s-0x30)*16+line-TSTAMP_MIN_Y]; | |
285 | for (i = 0; i < 7; i++) { | |
286 | if (chr & 1 << (7 - i)) { | |
287 | /* Font color*/ | |
288 | r = 0; | |
289 | g = 198; | |
290 | b = 0; | |
291 | } else { | |
292 | /* Background color */ | |
293 | r = bars[BLACK][0]; | |
294 | g = bars[BLACK][1]; | |
295 | b = bars[BLACK][2]; | |
1e6dd65e MCC |
296 | } |
297 | ||
543323bc MCC |
298 | pos = inipos + j * 2; |
299 | for (color = 0; color < 4; color++) { | |
300 | p = basep + pos; | |
1e6dd65e | 301 | |
543323bc | 302 | y = TO_Y(r, g, b); |
1e6dd65e MCC |
303 | |
304 | switch (color) { | |
543323bc MCC |
305 | case 0: |
306 | case 2: | |
307 | *p = TO_Y(r, g, b); /* Luma */ | |
308 | break; | |
309 | case 1: | |
310 | *p = TO_U(r, g, b); /* Cb */ | |
311 | break; | |
312 | case 3: | |
313 | *p = TO_V(r, g, b); /* Cr */ | |
314 | break; | |
1e6dd65e MCC |
315 | } |
316 | pos++; | |
317 | } | |
318 | j++; | |
319 | } | |
320 | } | |
321 | } | |
322 | ||
1e6dd65e | 323 | end: |
b50e7fe9 | 324 | return; |
1e6dd65e | 325 | } |
78718e5d | 326 | |
543323bc | 327 | static void vivi_fillbuff(struct vivi_dev *dev, struct vivi_buffer *buf) |
1e6dd65e | 328 | { |
543323bc | 329 | int h , pos = 0; |
1e6dd65e MCC |
330 | int hmax = buf->vb.height; |
331 | int wmax = buf->vb.width; | |
1e6dd65e | 332 | struct timeval ts; |
5c554e6b | 333 | char *tmpbuf; |
543323bc | 334 | void *vbuf = videobuf_to_vmalloc(&buf->vb); |
b50e7fe9 | 335 | |
5c554e6b | 336 | if (!vbuf) |
5a037706 | 337 | return; |
1e6dd65e | 338 | |
5c554e6b MS |
339 | tmpbuf = kmalloc(wmax * 2, GFP_ATOMIC); |
340 | if (!tmpbuf) | |
78718e5d BP |
341 | return; |
342 | ||
543323bc | 343 | for (h = 0; h < hmax; h++) { |
025341d4 | 344 | gen_line(tmpbuf, 0, wmax, hmax, h, dev->mv_count, |
3bef5e4a | 345 | dev->timestr); |
78718e5d | 346 | memcpy(vbuf + pos, tmpbuf, wmax * 2); |
1e6dd65e MCC |
347 | pos += wmax*2; |
348 | } | |
349 | ||
025341d4 | 350 | dev->mv_count++; |
3bef5e4a | 351 | |
5a037706 MCC |
352 | kfree(tmpbuf); |
353 | ||
1e6dd65e MCC |
354 | /* Updates stream time */ |
355 | ||
dfd8c04e | 356 | dev->ms += jiffies_to_msecs(jiffies-dev->jiffies); |
543323bc | 357 | dev->jiffies = jiffies; |
dfd8c04e MCC |
358 | if (dev->ms >= 1000) { |
359 | dev->ms -= 1000; | |
1e6dd65e | 360 | dev->s++; |
543323bc MCC |
361 | if (dev->s >= 60) { |
362 | dev->s -= 60; | |
1e6dd65e | 363 | dev->m++; |
543323bc MCC |
364 | if (dev->m > 60) { |
365 | dev->m -= 60; | |
1e6dd65e | 366 | dev->h++; |
543323bc MCC |
367 | if (dev->h > 24) |
368 | dev->h -= 24; | |
1e6dd65e MCC |
369 | } |
370 | } | |
371 | } | |
543323bc | 372 | sprintf(dev->timestr, "%02d:%02d:%02d:%03d", |
dfd8c04e | 373 | dev->h, dev->m, dev->s, dev->ms); |
1e6dd65e | 374 | |
6c2f9901 MCC |
375 | dprintk(dev, 2, "vivifill at %s: Buffer 0x%08lx size= %d\n", |
376 | dev->timestr, (unsigned long)tmpbuf, pos); | |
1e6dd65e MCC |
377 | |
378 | /* Advice that buffer was filled */ | |
1e6dd65e MCC |
379 | buf->vb.field_count++; |
380 | do_gettimeofday(&ts); | |
381 | buf->vb.ts = ts; | |
78718e5d | 382 | buf->vb.state = VIDEOBUF_DONE; |
1e6dd65e MCC |
383 | } |
384 | ||
78718e5d | 385 | static void vivi_thread_tick(struct vivi_fh *fh) |
1e6dd65e | 386 | { |
78718e5d BP |
387 | struct vivi_buffer *buf; |
388 | struct vivi_dev *dev = fh->dev; | |
389 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
1e6dd65e | 390 | |
78718e5d | 391 | unsigned long flags = 0; |
1e6dd65e | 392 | |
78718e5d | 393 | dprintk(dev, 1, "Thread tick\n"); |
1e6dd65e | 394 | |
78718e5d BP |
395 | spin_lock_irqsave(&dev->slock, flags); |
396 | if (list_empty(&dma_q->active)) { | |
397 | dprintk(dev, 1, "No active queue to serve\n"); | |
398 | goto unlock; | |
399 | } | |
1e6dd65e | 400 | |
78718e5d BP |
401 | buf = list_entry(dma_q->active.next, |
402 | struct vivi_buffer, vb.queue); | |
1e6dd65e | 403 | |
78718e5d BP |
404 | /* Nobody is waiting on this buffer, return */ |
405 | if (!waitqueue_active(&buf->vb.done)) | |
406 | goto unlock; | |
1e6dd65e | 407 | |
78718e5d | 408 | list_del(&buf->vb.queue); |
0b600512 | 409 | |
78718e5d BP |
410 | do_gettimeofday(&buf->vb.ts); |
411 | ||
412 | /* Fill buffer */ | |
413 | vivi_fillbuff(dev, buf); | |
414 | dprintk(dev, 1, "filled buffer %p\n", buf); | |
415 | ||
416 | wake_up(&buf->vb.done); | |
417 | dprintk(dev, 2, "[%p/%d] wakeup\n", buf, buf->vb. i); | |
418 | unlock: | |
419 | spin_unlock_irqrestore(&dev->slock, flags); | |
420 | return; | |
1e6dd65e MCC |
421 | } |
422 | ||
6594ad82 MCC |
423 | #define frames_to_ms(frames) \ |
424 | ((frames * WAKE_NUMERATOR * 1000) / WAKE_DENOMINATOR) | |
425 | ||
78718e5d | 426 | static void vivi_sleep(struct vivi_fh *fh) |
1e6dd65e | 427 | { |
78718e5d BP |
428 | struct vivi_dev *dev = fh->dev; |
429 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
430 | int timeout; | |
1e6dd65e MCC |
431 | DECLARE_WAITQUEUE(wait, current); |
432 | ||
7e28adb2 | 433 | dprintk(dev, 1, "%s dma_q=0x%08lx\n", __func__, |
6c2f9901 | 434 | (unsigned long)dma_q); |
1e6dd65e MCC |
435 | |
436 | add_wait_queue(&dma_q->wq, &wait); | |
6594ad82 MCC |
437 | if (kthread_should_stop()) |
438 | goto stop_task; | |
439 | ||
6594ad82 | 440 | /* Calculate time to wake up */ |
78718e5d | 441 | timeout = msecs_to_jiffies(frames_to_ms(1)); |
6594ad82 | 442 | |
78718e5d | 443 | vivi_thread_tick(fh); |
6594ad82 MCC |
444 | |
445 | schedule_timeout_interruptible(timeout); | |
1e6dd65e | 446 | |
6594ad82 | 447 | stop_task: |
1e6dd65e MCC |
448 | remove_wait_queue(&dma_q->wq, &wait); |
449 | try_to_freeze(); | |
450 | } | |
451 | ||
972c3517 | 452 | static int vivi_thread(void *data) |
1e6dd65e | 453 | { |
78718e5d BP |
454 | struct vivi_fh *fh = data; |
455 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e | 456 | |
6c2f9901 | 457 | dprintk(dev, 1, "thread started\n"); |
1e6dd65e | 458 | |
83144186 | 459 | set_freezable(); |
0b600512 | 460 | |
1e6dd65e | 461 | for (;;) { |
78718e5d | 462 | vivi_sleep(fh); |
1e6dd65e MCC |
463 | |
464 | if (kthread_should_stop()) | |
465 | break; | |
466 | } | |
6c2f9901 | 467 | dprintk(dev, 1, "thread: exit\n"); |
1e6dd65e MCC |
468 | return 0; |
469 | } | |
470 | ||
78718e5d | 471 | static int vivi_start_thread(struct vivi_fh *fh) |
1e6dd65e | 472 | { |
78718e5d BP |
473 | struct vivi_dev *dev = fh->dev; |
474 | struct vivi_dmaqueue *dma_q = &dev->vidq; | |
6c2f9901 | 475 | |
543323bc MCC |
476 | dma_q->frame = 0; |
477 | dma_q->ini_jiffies = jiffies; | |
1e6dd65e | 478 | |
7e28adb2 | 479 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e | 480 | |
78718e5d | 481 | dma_q->kthread = kthread_run(vivi_thread, fh, "vivi"); |
1e6dd65e | 482 | |
054afee4 | 483 | if (IS_ERR(dma_q->kthread)) { |
1e6dd65e | 484 | printk(KERN_ERR "vivi: kernel_thread() failed\n"); |
054afee4 | 485 | return PTR_ERR(dma_q->kthread); |
1e6dd65e | 486 | } |
0b600512 MCC |
487 | /* Wakes thread */ |
488 | wake_up_interruptible(&dma_q->wq); | |
489 | ||
7e28adb2 | 490 | dprintk(dev, 1, "returning from %s\n", __func__); |
1e6dd65e MCC |
491 | return 0; |
492 | } | |
493 | ||
972c3517 | 494 | static void vivi_stop_thread(struct vivi_dmaqueue *dma_q) |
1e6dd65e | 495 | { |
6c2f9901 MCC |
496 | struct vivi_dev *dev = container_of(dma_q, struct vivi_dev, vidq); |
497 | ||
7e28adb2 | 498 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e MCC |
499 | /* shutdown control thread */ |
500 | if (dma_q->kthread) { | |
501 | kthread_stop(dma_q->kthread); | |
543323bc | 502 | dma_q->kthread = NULL; |
1e6dd65e MCC |
503 | } |
504 | } | |
505 | ||
1e6dd65e MCC |
506 | /* ------------------------------------------------------------------ |
507 | Videobuf operations | |
508 | ------------------------------------------------------------------*/ | |
509 | static int | |
510 | buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) | |
511 | { | |
6c2f9901 MCC |
512 | struct vivi_fh *fh = vq->priv_data; |
513 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
514 | |
515 | *size = fh->width*fh->height*2; | |
516 | ||
517 | if (0 == *count) | |
518 | *count = 32; | |
6bb2790f | 519 | |
1e6dd65e MCC |
520 | while (*size * *count > vid_limit * 1024 * 1024) |
521 | (*count)--; | |
6bb2790f | 522 | |
7e28adb2 | 523 | dprintk(dev, 1, "%s, count=%d, size=%d\n", __func__, |
6c2f9901 | 524 | *count, *size); |
6bb2790f | 525 | |
1e6dd65e MCC |
526 | return 0; |
527 | } | |
528 | ||
972c3517 | 529 | static void free_buffer(struct videobuf_queue *vq, struct vivi_buffer *buf) |
1e6dd65e | 530 | { |
6c2f9901 MCC |
531 | struct vivi_fh *fh = vq->priv_data; |
532 | struct vivi_dev *dev = fh->dev; | |
533 | ||
7e28adb2 | 534 | dprintk(dev, 1, "%s, state: %i\n", __func__, buf->vb.state); |
1e6dd65e MCC |
535 | |
536 | if (in_interrupt()) | |
537 | BUG(); | |
538 | ||
5a037706 | 539 | videobuf_vmalloc_free(&buf->vb); |
fbde31d5 | 540 | dprintk(dev, 1, "free_buffer: freed\n"); |
0fc0686e | 541 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
1e6dd65e MCC |
542 | } |
543 | ||
544 | #define norm_maxw() 1024 | |
545 | #define norm_maxh() 768 | |
546 | static int | |
547 | buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, | |
548 | enum v4l2_field field) | |
549 | { | |
550 | struct vivi_fh *fh = vq->priv_data; | |
6c2f9901 | 551 | struct vivi_dev *dev = fh->dev; |
543323bc | 552 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
78718e5d | 553 | int rc; |
1e6dd65e | 554 | |
7e28adb2 | 555 | dprintk(dev, 1, "%s, field=%d\n", __func__, field); |
1e6dd65e MCC |
556 | |
557 | BUG_ON(NULL == fh->fmt); | |
78718e5d | 558 | |
1e6dd65e MCC |
559 | if (fh->width < 48 || fh->width > norm_maxw() || |
560 | fh->height < 32 || fh->height > norm_maxh()) | |
561 | return -EINVAL; | |
78718e5d | 562 | |
1e6dd65e MCC |
563 | buf->vb.size = fh->width*fh->height*2; |
564 | if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) | |
565 | return -EINVAL; | |
566 | ||
78718e5d BP |
567 | /* These properties only change when queue is idle, see s_fmt */ |
568 | buf->fmt = fh->fmt; | |
569 | buf->vb.width = fh->width; | |
570 | buf->vb.height = fh->height; | |
571 | buf->vb.field = field; | |
1e6dd65e | 572 | |
0fc0686e | 573 | if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { |
543323bc MCC |
574 | rc = videobuf_iolock(vq, &buf->vb, NULL); |
575 | if (rc < 0) | |
1e6dd65e MCC |
576 | goto fail; |
577 | } | |
578 | ||
0fc0686e | 579 | buf->vb.state = VIDEOBUF_PREPARED; |
1e6dd65e | 580 | |
1e6dd65e MCC |
581 | return 0; |
582 | ||
583 | fail: | |
543323bc | 584 | free_buffer(vq, buf); |
1e6dd65e MCC |
585 | return rc; |
586 | } | |
587 | ||
588 | static void | |
589 | buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) | |
590 | { | |
543323bc MCC |
591 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
592 | struct vivi_fh *fh = vq->priv_data; | |
593 | struct vivi_dev *dev = fh->dev; | |
78718e5d BP |
594 | struct vivi_dmaqueue *vidq = &dev->vidq; |
595 | ||
7e28adb2 | 596 | dprintk(dev, 1, "%s\n", __func__); |
78718e5d BP |
597 | |
598 | buf->vb.state = VIDEOBUF_QUEUED; | |
599 | list_add_tail(&buf->vb.queue, &vidq->active); | |
1e6dd65e MCC |
600 | } |
601 | ||
543323bc MCC |
602 | static void buffer_release(struct videobuf_queue *vq, |
603 | struct videobuf_buffer *vb) | |
1e6dd65e | 604 | { |
543323bc | 605 | struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb); |
1e6dd65e | 606 | struct vivi_fh *fh = vq->priv_data; |
543323bc | 607 | struct vivi_dev *dev = (struct vivi_dev *)fh->dev; |
1e6dd65e | 608 | |
7e28adb2 | 609 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e | 610 | |
543323bc | 611 | free_buffer(vq, buf); |
1e6dd65e MCC |
612 | } |
613 | ||
1e6dd65e MCC |
614 | static struct videobuf_queue_ops vivi_video_qops = { |
615 | .buf_setup = buffer_setup, | |
616 | .buf_prepare = buffer_prepare, | |
617 | .buf_queue = buffer_queue, | |
618 | .buf_release = buffer_release, | |
1e6dd65e MCC |
619 | }; |
620 | ||
c820cc45 MCC |
621 | /* ------------------------------------------------------------------ |
622 | IOCTL vidioc handling | |
623 | ------------------------------------------------------------------*/ | |
543323bc | 624 | static int vidioc_querycap(struct file *file, void *priv, |
c820cc45 MCC |
625 | struct v4l2_capability *cap) |
626 | { | |
627 | strcpy(cap->driver, "vivi"); | |
628 | strcpy(cap->card, "vivi"); | |
629 | cap->version = VIVI_VERSION; | |
630 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | | |
631 | V4L2_CAP_STREAMING | | |
632 | V4L2_CAP_READWRITE; | |
633 | return 0; | |
634 | } | |
635 | ||
78b526a4 | 636 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 MCC |
637 | struct v4l2_fmtdesc *f) |
638 | { | |
639 | if (f->index > 0) | |
640 | return -EINVAL; | |
641 | ||
543323bc | 642 | strlcpy(f->description, format.name, sizeof(f->description)); |
c820cc45 MCC |
643 | f->pixelformat = format.fourcc; |
644 | return 0; | |
645 | } | |
646 | ||
78b526a4 | 647 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 MCC |
648 | struct v4l2_format *f) |
649 | { | |
543323bc | 650 | struct vivi_fh *fh = priv; |
c820cc45 MCC |
651 | |
652 | f->fmt.pix.width = fh->width; | |
653 | f->fmt.pix.height = fh->height; | |
654 | f->fmt.pix.field = fh->vb_vidq.field; | |
655 | f->fmt.pix.pixelformat = fh->fmt->fourcc; | |
656 | f->fmt.pix.bytesperline = | |
657 | (f->fmt.pix.width * fh->fmt->depth) >> 3; | |
658 | f->fmt.pix.sizeimage = | |
659 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
660 | ||
661 | return (0); | |
662 | } | |
663 | ||
78b526a4 | 664 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, |
1e6dd65e MCC |
665 | struct v4l2_format *f) |
666 | { | |
6c2f9901 MCC |
667 | struct vivi_fh *fh = priv; |
668 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
669 | struct vivi_fmt *fmt; |
670 | enum v4l2_field field; | |
671 | unsigned int maxw, maxh; | |
672 | ||
673 | if (format.fourcc != f->fmt.pix.pixelformat) { | |
6c2f9901 MCC |
674 | dprintk(dev, 1, "Fourcc format (0x%08x) invalid. " |
675 | "Driver accepts only 0x%08x\n", | |
676 | f->fmt.pix.pixelformat, format.fourcc); | |
1e6dd65e MCC |
677 | return -EINVAL; |
678 | } | |
543323bc | 679 | fmt = &format; |
1e6dd65e MCC |
680 | |
681 | field = f->fmt.pix.field; | |
682 | ||
683 | if (field == V4L2_FIELD_ANY) { | |
543323bc | 684 | field = V4L2_FIELD_INTERLACED; |
1e6dd65e | 685 | } else if (V4L2_FIELD_INTERLACED != field) { |
6c2f9901 | 686 | dprintk(dev, 1, "Field type invalid.\n"); |
1e6dd65e MCC |
687 | return -EINVAL; |
688 | } | |
689 | ||
690 | maxw = norm_maxw(); | |
691 | maxh = norm_maxh(); | |
692 | ||
693 | f->fmt.pix.field = field; | |
694 | if (f->fmt.pix.height < 32) | |
695 | f->fmt.pix.height = 32; | |
696 | if (f->fmt.pix.height > maxh) | |
697 | f->fmt.pix.height = maxh; | |
698 | if (f->fmt.pix.width < 48) | |
699 | f->fmt.pix.width = 48; | |
700 | if (f->fmt.pix.width > maxw) | |
701 | f->fmt.pix.width = maxw; | |
702 | f->fmt.pix.width &= ~0x03; | |
703 | f->fmt.pix.bytesperline = | |
704 | (f->fmt.pix.width * fmt->depth) >> 3; | |
705 | f->fmt.pix.sizeimage = | |
706 | f->fmt.pix.height * f->fmt.pix.bytesperline; | |
707 | ||
708 | return 0; | |
709 | } | |
710 | ||
c820cc45 | 711 | /*FIXME: This seems to be generic enough to be at videodev2 */ |
78b526a4 | 712 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, |
c820cc45 | 713 | struct v4l2_format *f) |
1e6dd65e | 714 | { |
543323bc | 715 | struct vivi_fh *fh = priv; |
78718e5d BP |
716 | struct videobuf_queue *q = &fh->vb_vidq; |
717 | ||
78b526a4 | 718 | int ret = vidioc_try_fmt_vid_cap(file, fh, f); |
c820cc45 MCC |
719 | if (ret < 0) |
720 | return (ret); | |
721 | ||
78718e5d BP |
722 | mutex_lock(&q->vb_lock); |
723 | ||
724 | if (videobuf_queue_is_busy(&fh->vb_vidq)) { | |
7e28adb2 | 725 | dprintk(fh->dev, 1, "%s queue busy\n", __func__); |
78718e5d BP |
726 | ret = -EBUSY; |
727 | goto out; | |
728 | } | |
729 | ||
c820cc45 MCC |
730 | fh->fmt = &format; |
731 | fh->width = f->fmt.pix.width; | |
732 | fh->height = f->fmt.pix.height; | |
733 | fh->vb_vidq.field = f->fmt.pix.field; | |
734 | fh->type = f->type; | |
735 | ||
78718e5d BP |
736 | ret = 0; |
737 | out: | |
738 | mutex_unlock(&q->vb_lock); | |
739 | ||
740 | return (ret); | |
1e6dd65e MCC |
741 | } |
742 | ||
543323bc MCC |
743 | static int vidioc_reqbufs(struct file *file, void *priv, |
744 | struct v4l2_requestbuffers *p) | |
1e6dd65e | 745 | { |
543323bc | 746 | struct vivi_fh *fh = priv; |
1e6dd65e | 747 | |
c820cc45 | 748 | return (videobuf_reqbufs(&fh->vb_vidq, p)); |
1e6dd65e MCC |
749 | } |
750 | ||
543323bc | 751 | static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p) |
1e6dd65e | 752 | { |
543323bc | 753 | struct vivi_fh *fh = priv; |
1e6dd65e | 754 | |
c820cc45 MCC |
755 | return (videobuf_querybuf(&fh->vb_vidq, p)); |
756 | } | |
1e6dd65e | 757 | |
543323bc | 758 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
c820cc45 | 759 | { |
543323bc | 760 | struct vivi_fh *fh = priv; |
1e6dd65e | 761 | |
c820cc45 MCC |
762 | return (videobuf_qbuf(&fh->vb_vidq, p)); |
763 | } | |
1e6dd65e | 764 | |
543323bc | 765 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
c820cc45 | 766 | { |
543323bc | 767 | struct vivi_fh *fh = priv; |
1e6dd65e | 768 | |
c820cc45 MCC |
769 | return (videobuf_dqbuf(&fh->vb_vidq, p, |
770 | file->f_flags & O_NONBLOCK)); | |
771 | } | |
1e6dd65e | 772 | |
0dfa9abd | 773 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
543323bc | 774 | static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf) |
c820cc45 | 775 | { |
543323bc | 776 | struct vivi_fh *fh = priv; |
4ceb04e1 | 777 | |
543323bc | 778 | return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8); |
c820cc45 MCC |
779 | } |
780 | #endif | |
1e6dd65e | 781 | |
dc46ace1 | 782 | static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) |
c820cc45 | 783 | { |
543323bc | 784 | struct vivi_fh *fh = priv; |
1e6dd65e | 785 | |
c820cc45 MCC |
786 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
787 | return -EINVAL; | |
788 | if (i != fh->type) | |
789 | return -EINVAL; | |
1e6dd65e | 790 | |
ba32bd95 | 791 | return videobuf_streamon(&fh->vb_vidq); |
c820cc45 | 792 | } |
1e6dd65e | 793 | |
dc46ace1 | 794 | static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) |
c820cc45 | 795 | { |
543323bc | 796 | struct vivi_fh *fh = priv; |
1e6dd65e | 797 | |
c820cc45 MCC |
798 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
799 | return -EINVAL; | |
800 | if (i != fh->type) | |
801 | return -EINVAL; | |
1e6dd65e | 802 | |
ba32bd95 | 803 | return videobuf_streamoff(&fh->vb_vidq); |
c820cc45 MCC |
804 | } |
805 | ||
543323bc | 806 | static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *i) |
c820cc45 | 807 | { |
c820cc45 MCC |
808 | return 0; |
809 | } | |
1e6dd65e | 810 | |
c820cc45 | 811 | /* only one input in this sample driver */ |
543323bc | 812 | static int vidioc_enum_input(struct file *file, void *priv, |
c820cc45 MCC |
813 | struct v4l2_input *inp) |
814 | { | |
815 | if (inp->index != 0) | |
816 | return -EINVAL; | |
1e6dd65e | 817 | |
c820cc45 | 818 | inp->type = V4L2_INPUT_TYPE_CAMERA; |
784c668b | 819 | inp->std = V4L2_STD_525_60; |
543323bc | 820 | strcpy(inp->name, "Camera"); |
1e6dd65e | 821 | |
c820cc45 MCC |
822 | return (0); |
823 | } | |
1e6dd65e | 824 | |
543323bc | 825 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) |
c820cc45 MCC |
826 | { |
827 | *i = 0; | |
1e6dd65e | 828 | |
c820cc45 MCC |
829 | return (0); |
830 | } | |
543323bc | 831 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) |
c820cc45 MCC |
832 | { |
833 | if (i > 0) | |
834 | return -EINVAL; | |
1e6dd65e | 835 | |
c820cc45 MCC |
836 | return (0); |
837 | } | |
1e6dd65e MCC |
838 | |
839 | /* --- controls ---------------------------------------------- */ | |
543323bc MCC |
840 | static int vidioc_queryctrl(struct file *file, void *priv, |
841 | struct v4l2_queryctrl *qc) | |
c820cc45 MCC |
842 | { |
843 | int i; | |
1e6dd65e | 844 | |
c820cc45 MCC |
845 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
846 | if (qc->id && qc->id == vivi_qctrl[i].id) { | |
847 | memcpy(qc, &(vivi_qctrl[i]), | |
848 | sizeof(*qc)); | |
849 | return (0); | |
850 | } | |
1e6dd65e | 851 | |
c820cc45 MCC |
852 | return -EINVAL; |
853 | } | |
1e6dd65e | 854 | |
543323bc MCC |
855 | static int vidioc_g_ctrl(struct file *file, void *priv, |
856 | struct v4l2_control *ctrl) | |
c820cc45 MCC |
857 | { |
858 | int i; | |
1e6dd65e | 859 | |
c820cc45 MCC |
860 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
861 | if (ctrl->id == vivi_qctrl[i].id) { | |
543323bc | 862 | ctrl->value = qctl_regs[i]; |
c820cc45 MCC |
863 | return (0); |
864 | } | |
1e6dd65e | 865 | |
c820cc45 | 866 | return -EINVAL; |
1e6dd65e | 867 | } |
543323bc | 868 | static int vidioc_s_ctrl(struct file *file, void *priv, |
c820cc45 | 869 | struct v4l2_control *ctrl) |
1e6dd65e | 870 | { |
c820cc45 MCC |
871 | int i; |
872 | ||
873 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
874 | if (ctrl->id == vivi_qctrl[i].id) { | |
543323bc MCC |
875 | if (ctrl->value < vivi_qctrl[i].minimum |
876 | || ctrl->value > vivi_qctrl[i].maximum) { | |
c820cc45 MCC |
877 | return (-ERANGE); |
878 | } | |
543323bc | 879 | qctl_regs[i] = ctrl->value; |
c820cc45 MCC |
880 | return (0); |
881 | } | |
882 | return -EINVAL; | |
1e6dd65e MCC |
883 | } |
884 | ||
885 | /* ------------------------------------------------------------------ | |
886 | File operations for the device | |
887 | ------------------------------------------------------------------*/ | |
888 | ||
889 | #define line_buf_size(norm) (norm_maxw(norm)*(format.depth+7)/8) | |
890 | ||
891 | static int vivi_open(struct inode *inode, struct file *file) | |
892 | { | |
893 | int minor = iminor(inode); | |
a991f44b | 894 | struct vivi_dev *dev; |
63b79cfa | 895 | struct vivi_fh *fh = NULL; |
1e6dd65e | 896 | int i; |
aa9dbac4 | 897 | int retval = 0; |
1e6dd65e | 898 | |
543323bc | 899 | printk(KERN_DEBUG "vivi: open called (minor=%d)\n", minor); |
1e6dd65e | 900 | |
d56dc612 | 901 | lock_kernel(); |
a991f44b | 902 | list_for_each_entry(dev, &vivi_devlist, vivi_devlist) |
f905c442 | 903 | if (dev->vfd->minor == minor) |
a991f44b | 904 | goto found; |
d56dc612 | 905 | unlock_kernel(); |
a991f44b | 906 | return -ENODEV; |
c820cc45 | 907 | |
543323bc | 908 | found: |
aa9dbac4 | 909 | mutex_lock(&dev->mutex); |
1e6dd65e MCC |
910 | dev->users++; |
911 | ||
aa9dbac4 BP |
912 | if (dev->users > 1) { |
913 | dev->users--; | |
914 | retval = -EBUSY; | |
915 | goto unlock; | |
916 | } | |
917 | ||
6c2f9901 | 918 | dprintk(dev, 1, "open minor=%d type=%s users=%d\n", minor, |
a991f44b | 919 | v4l2_type_names[V4L2_BUF_TYPE_VIDEO_CAPTURE], dev->users); |
1e6dd65e MCC |
920 | |
921 | /* allocate + initialize per filehandle data */ | |
543323bc | 922 | fh = kzalloc(sizeof(*fh), GFP_KERNEL); |
1e6dd65e MCC |
923 | if (NULL == fh) { |
924 | dev->users--; | |
aa9dbac4 BP |
925 | retval = -ENOMEM; |
926 | goto unlock; | |
1e6dd65e | 927 | } |
aa9dbac4 BP |
928 | unlock: |
929 | mutex_unlock(&dev->mutex); | |
d56dc612 HV |
930 | if (retval) { |
931 | unlock_kernel(); | |
aa9dbac4 | 932 | return retval; |
d56dc612 | 933 | } |
1e6dd65e MCC |
934 | |
935 | file->private_data = fh; | |
936 | fh->dev = dev; | |
c820cc45 | 937 | |
1e6dd65e MCC |
938 | fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
939 | fh->fmt = &format; | |
940 | fh->width = 640; | |
941 | fh->height = 480; | |
942 | ||
943 | /* Put all controls at a sane state */ | |
944 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) | |
543323bc | 945 | qctl_regs[i] = vivi_qctrl[i].default_value; |
1e6dd65e MCC |
946 | |
947 | /* Resets frame counters */ | |
543323bc MCC |
948 | dev->h = 0; |
949 | dev->m = 0; | |
950 | dev->s = 0; | |
dfd8c04e | 951 | dev->ms = 0; |
543323bc MCC |
952 | dev->mv_count = 0; |
953 | dev->jiffies = jiffies; | |
954 | sprintf(dev->timestr, "%02d:%02d:%02d:%03d", | |
dfd8c04e | 955 | dev->h, dev->m, dev->s, dev->ms); |
1e6dd65e | 956 | |
5a037706 | 957 | videobuf_queue_vmalloc_init(&fh->vb_vidq, &vivi_video_qops, |
55862ac9 | 958 | NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED, |
543323bc | 959 | sizeof(struct vivi_buffer), fh); |
1e6dd65e | 960 | |
78718e5d | 961 | vivi_start_thread(fh); |
d56dc612 | 962 | unlock_kernel(); |
78718e5d | 963 | |
1e6dd65e MCC |
964 | return 0; |
965 | } | |
966 | ||
967 | static ssize_t | |
968 | vivi_read(struct file *file, char __user *data, size_t count, loff_t *ppos) | |
969 | { | |
543323bc | 970 | struct vivi_fh *fh = file->private_data; |
1e6dd65e | 971 | |
543323bc | 972 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
acb09af4 | 973 | return videobuf_read_stream(&fh->vb_vidq, data, count, ppos, 0, |
1e6dd65e MCC |
974 | file->f_flags & O_NONBLOCK); |
975 | } | |
976 | return 0; | |
977 | } | |
978 | ||
979 | static unsigned int | |
980 | vivi_poll(struct file *file, struct poll_table_struct *wait) | |
981 | { | |
c820cc45 | 982 | struct vivi_fh *fh = file->private_data; |
6c2f9901 | 983 | struct vivi_dev *dev = fh->dev; |
85c7c70b | 984 | struct videobuf_queue *q = &fh->vb_vidq; |
1e6dd65e | 985 | |
7e28adb2 | 986 | dprintk(dev, 1, "%s\n", __func__); |
1e6dd65e MCC |
987 | |
988 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) | |
989 | return POLLERR; | |
990 | ||
85c7c70b | 991 | return videobuf_poll_stream(file, q, wait); |
1e6dd65e MCC |
992 | } |
993 | ||
f905c442 | 994 | static int vivi_close(struct inode *inode, struct file *file) |
1e6dd65e | 995 | { |
c820cc45 MCC |
996 | struct vivi_fh *fh = file->private_data; |
997 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
998 | struct vivi_dmaqueue *vidq = &dev->vidq; |
999 | ||
1000 | int minor = iminor(inode); | |
1001 | ||
1002 | vivi_stop_thread(vidq); | |
053fcb60 | 1003 | videobuf_stop(&fh->vb_vidq); |
1e6dd65e MCC |
1004 | videobuf_mmap_free(&fh->vb_vidq); |
1005 | ||
55712ff7 | 1006 | kfree(fh); |
1e6dd65e | 1007 | |
aa9dbac4 | 1008 | mutex_lock(&dev->mutex); |
1e6dd65e | 1009 | dev->users--; |
aa9dbac4 | 1010 | mutex_unlock(&dev->mutex); |
1e6dd65e | 1011 | |
6c2f9901 MCC |
1012 | dprintk(dev, 1, "close called (minor=%d, users=%d)\n", |
1013 | minor, dev->users); | |
1e6dd65e MCC |
1014 | |
1015 | return 0; | |
1016 | } | |
1017 | ||
55712ff7 | 1018 | static int vivi_release(void) |
f905c442 | 1019 | { |
55712ff7 MCC |
1020 | struct vivi_dev *dev; |
1021 | struct list_head *list; | |
1022 | ||
1023 | while (!list_empty(&vivi_devlist)) { | |
1024 | list = vivi_devlist.next; | |
1025 | list_del(list); | |
1026 | dev = list_entry(list, struct vivi_dev, vivi_devlist); | |
f905c442 | 1027 | |
745271ae | 1028 | if (-1 != dev->vfd->minor) { |
8da9bae3 | 1029 | printk(KERN_INFO "%s: unregistering /dev/video%d\n", |
584ce48d | 1030 | VIVI_MODULE_NAME, dev->vfd->minor); |
8da9bae3 | 1031 | video_unregister_device(dev->vfd); |
745271ae | 1032 | } else { |
8da9bae3 | 1033 | printk(KERN_INFO "%s: releasing /dev/video%d\n", |
584ce48d | 1034 | VIVI_MODULE_NAME, dev->vfd->minor); |
8da9bae3 | 1035 | video_device_release(dev->vfd); |
745271ae | 1036 | } |
55712ff7 MCC |
1037 | |
1038 | kfree(dev); | |
1039 | } | |
f905c442 MCC |
1040 | |
1041 | return 0; | |
1042 | } | |
1043 | ||
543323bc | 1044 | static int vivi_mmap(struct file *file, struct vm_area_struct *vma) |
1e6dd65e | 1045 | { |
6c2f9901 MCC |
1046 | struct vivi_fh *fh = file->private_data; |
1047 | struct vivi_dev *dev = fh->dev; | |
1e6dd65e MCC |
1048 | int ret; |
1049 | ||
6c2f9901 | 1050 | dprintk(dev, 1, "mmap called, vma=0x%08lx\n", (unsigned long)vma); |
1e6dd65e | 1051 | |
543323bc | 1052 | ret = videobuf_mmap_mapper(&fh->vb_vidq, vma); |
1e6dd65e | 1053 | |
6c2f9901 | 1054 | dprintk(dev, 1, "vma start=0x%08lx, size=%ld, ret=%d\n", |
1e6dd65e MCC |
1055 | (unsigned long)vma->vm_start, |
1056 | (unsigned long)vma->vm_end-(unsigned long)vma->vm_start, | |
1057 | ret); | |
1058 | ||
1059 | return ret; | |
1060 | } | |
1061 | ||
fa027c2a | 1062 | static const struct file_operations vivi_fops = { |
1e6dd65e MCC |
1063 | .owner = THIS_MODULE, |
1064 | .open = vivi_open, | |
f905c442 | 1065 | .release = vivi_close, |
1e6dd65e MCC |
1066 | .read = vivi_read, |
1067 | .poll = vivi_poll, | |
c820cc45 | 1068 | .ioctl = video_ioctl2, /* V4L2 ioctl handler */ |
fbde31d5 | 1069 | .compat_ioctl = v4l_compat_ioctl32, |
5a037706 | 1070 | .mmap = vivi_mmap, |
1e6dd65e MCC |
1071 | .llseek = no_llseek, |
1072 | }; | |
1073 | ||
a399810c | 1074 | static const struct v4l2_ioctl_ops vivi_ioctl_ops = { |
c820cc45 | 1075 | .vidioc_querycap = vidioc_querycap, |
78b526a4 HV |
1076 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, |
1077 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
1078 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
1079 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
c820cc45 MCC |
1080 | .vidioc_reqbufs = vidioc_reqbufs, |
1081 | .vidioc_querybuf = vidioc_querybuf, | |
1082 | .vidioc_qbuf = vidioc_qbuf, | |
1083 | .vidioc_dqbuf = vidioc_dqbuf, | |
1084 | .vidioc_s_std = vidioc_s_std, | |
1085 | .vidioc_enum_input = vidioc_enum_input, | |
1086 | .vidioc_g_input = vidioc_g_input, | |
1087 | .vidioc_s_input = vidioc_s_input, | |
1088 | .vidioc_queryctrl = vidioc_queryctrl, | |
1089 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
1090 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
1091 | .vidioc_streamon = vidioc_streamon, | |
1092 | .vidioc_streamoff = vidioc_streamoff, | |
0dfa9abd | 1093 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
c820cc45 MCC |
1094 | .vidiocgmbuf = vidiocgmbuf, |
1095 | #endif | |
a399810c HV |
1096 | }; |
1097 | ||
1098 | static struct video_device vivi_template = { | |
1099 | .name = "vivi", | |
a399810c HV |
1100 | .fops = &vivi_fops, |
1101 | .ioctl_ops = &vivi_ioctl_ops, | |
1102 | .minor = -1, | |
1103 | .release = video_device_release, | |
1104 | ||
784c668b | 1105 | .tvnorms = V4L2_STD_525_60, |
e75f9cee | 1106 | .current_norm = V4L2_STD_NTSC_M, |
1e6dd65e | 1107 | }; |
c820cc45 | 1108 | /* ----------------------------------------------------------------- |
1e6dd65e MCC |
1109 | Initialization and module stuff |
1110 | ------------------------------------------------------------------*/ | |
1111 | ||
980d4f17 MCC |
1112 | /* This routine allocates from 1 to n_devs virtual drivers. |
1113 | ||
1114 | The real maximum number of virtual drivers will depend on how many drivers | |
1115 | will succeed. This is limited to the maximum number of devices that | |
1116 | videodev supports. Since there are 64 minors for video grabbers, this is | |
1117 | currently the theoretical maximum limit. However, a further limit does | |
1118 | exist at videodev that forbids any driver to register more than 32 video | |
1119 | grabbers. | |
1120 | */ | |
1e6dd65e MCC |
1121 | static int __init vivi_init(void) |
1122 | { | |
55712ff7 | 1123 | int ret = -ENOMEM, i; |
1e6dd65e | 1124 | struct vivi_dev *dev; |
f905c442 | 1125 | struct video_device *vfd; |
1e6dd65e | 1126 | |
980d4f17 MCC |
1127 | if (n_devs <= 0) |
1128 | n_devs = 1; | |
1129 | ||
55712ff7 MCC |
1130 | for (i = 0; i < n_devs; i++) { |
1131 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); | |
980d4f17 | 1132 | if (!dev) |
55712ff7 | 1133 | break; |
1e6dd65e | 1134 | |
55712ff7 MCC |
1135 | /* init video dma queues */ |
1136 | INIT_LIST_HEAD(&dev->vidq.active); | |
55712ff7 | 1137 | init_waitqueue_head(&dev->vidq.wq); |
1e6dd65e | 1138 | |
55712ff7 | 1139 | /* initialize locks */ |
55862ac9 | 1140 | spin_lock_init(&dev->slock); |
aa9dbac4 | 1141 | mutex_init(&dev->mutex); |
1e6dd65e | 1142 | |
55712ff7 | 1143 | vfd = video_device_alloc(); |
980d4f17 MCC |
1144 | if (!vfd) { |
1145 | kfree(dev); | |
55712ff7 | 1146 | break; |
980d4f17 | 1147 | } |
55712ff7 MCC |
1148 | |
1149 | *vfd = vivi_template; | |
1150 | ||
1151 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr); | |
980d4f17 MCC |
1152 | if (ret < 0) { |
1153 | video_device_release(vfd); | |
1154 | kfree(dev); | |
1155 | ||
1156 | /* If some registers succeeded, keep driver */ | |
1157 | if (i) | |
1158 | ret = 0; | |
1159 | ||
55712ff7 | 1160 | break; |
980d4f17 MCC |
1161 | } |
1162 | ||
1163 | /* Now that everything is fine, let's add it to device list */ | |
1164 | list_add_tail(&dev->vivi_devlist, &vivi_devlist); | |
55712ff7 MCC |
1165 | |
1166 | snprintf(vfd->name, sizeof(vfd->name), "%s (%i)", | |
1167 | vivi_template.name, vfd->minor); | |
f905c442 | 1168 | |
55712ff7 MCC |
1169 | if (video_nr >= 0) |
1170 | video_nr++; | |
f905c442 | 1171 | |
55712ff7 | 1172 | dev->vfd = vfd; |
745271ae | 1173 | printk(KERN_INFO "%s: V4L2 device registered as /dev/video%d\n", |
584ce48d | 1174 | VIVI_MODULE_NAME, vfd->minor); |
55712ff7 | 1175 | } |
f905c442 | 1176 | |
55712ff7 MCC |
1177 | if (ret < 0) { |
1178 | vivi_release(); | |
1179 | printk(KERN_INFO "Error %d while loading vivi driver\n", ret); | |
980d4f17 | 1180 | } else { |
55712ff7 | 1181 | printk(KERN_INFO "Video Technology Magazine Virtual Video " |
745271ae CK |
1182 | "Capture Board ver %u.%u.%u successfully loaded.\n", |
1183 | (VIVI_VERSION >> 16) & 0xFF, (VIVI_VERSION >> 8) & 0xFF, | |
1184 | VIVI_VERSION & 0xFF); | |
980d4f17 MCC |
1185 | |
1186 | /* n_devs will reflect the actual number of allocated devices */ | |
1187 | n_devs = i; | |
1188 | } | |
1189 | ||
1e6dd65e MCC |
1190 | return ret; |
1191 | } | |
1192 | ||
1193 | static void __exit vivi_exit(void) | |
1194 | { | |
55712ff7 | 1195 | vivi_release(); |
1e6dd65e MCC |
1196 | } |
1197 | ||
1198 | module_init(vivi_init); | |
1199 | module_exit(vivi_exit); | |
c820cc45 MCC |
1200 | |
1201 | MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board"); | |
1202 | MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol"); | |
1203 | MODULE_LICENSE("Dual BSD/GPL"); | |
1204 | ||
980d4f17 | 1205 | module_param(video_nr, uint, 0444); |
55712ff7 | 1206 | MODULE_PARM_DESC(video_nr, "video iminor start number"); |
c820cc45 | 1207 | |
980d4f17 | 1208 | module_param(n_devs, uint, 0444); |
55712ff7 | 1209 | MODULE_PARM_DESC(n_devs, "number of video devices to create"); |
c820cc45 | 1210 | |
8996b3f3 | 1211 | module_param_named(debug, vivi_template.debug, int, 0444); |
55712ff7 | 1212 | MODULE_PARM_DESC(debug, "activates debug info"); |
c820cc45 | 1213 | |
55712ff7 MCC |
1214 | module_param(vid_limit, int, 0644); |
1215 | MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes"); |